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Method and apparatus for encoding and decoding video images

A technology for encoding images and images, which can be used in image communication, digital video signal modification, television, etc., and can solve the problem of limited number of reference image frames.

Inactive Publication Date: 2008-06-18
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

However, the number of reference image frames that can be used is limited due to the amount of computation required for motion estimation and the limitation of storage space

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  • Method and apparatus for encoding and decoding video images
  • Method and apparatus for encoding and decoding video images
  • Method and apparatus for encoding and decoding video images

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Embodiment Construction

[0027] Now, the present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown.

[0028] 1A to 1C are schematic diagrams illustrating examples of image frames sequentially input into an apparatus for encoding images according to an embodiment of the present invention. 2A is a schematic diagram illustrating an example of a reference background image generated by using the image frames shown in FIGS. 1A to 1C according to an embodiment of the present invention, and FIG. 2B is a diagram illustrating an example of a reference background image generated by using the image frame according to an embodiment of the present invention. Schematic diagrams of examples of reference target images generated from the image frames shown in FIGS. 1A to 1C.

[0029] When the target moves, it can be exposed to the background area hidden by the target in the image frame at any time, and in the image frame at ...

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Abstract

A method of and apparatus for encoding and / or decoding an image are provided, in which motion estimation and compensation are performed by using a reference background image and a reference object image extracted from an input image frame. In the method and apparatus, a background image of each of input image frames is used, and a background area which any one image frame lacks is updated by using a background image of another image frame. In this way, a reference background image is generated and stored, and an object image in each image frame is stored as a reference object image. Then, by using the stored reference background images and reference object images, motion estimation and compensation are performed, thereby increasing encoding efficiency.

Description

[0001] Cross-references to related patent applications [0002] This application claims priority for the Korean patent application filed at the Korean Intellectual Property Office on November 28, 2006 with the application number 10-2006-011847, and the full text is hereby incorporated for reference. Technical field [0003] The present invention relates to the encoding and decoding of video images, and more specifically, to a method and apparatus for encoding and decoding video images, in which a background image of each input image frame is used, and the background image of another image frame is used. Update the missing background area of ​​any image frame, so a reference background image is generated and stored, and the object image in each image frame is stored as a reference target image, and then, by using the stored reference background image and reference Target image, perform motion estimation and compensation. Background technique [0004] In the ITU-T H.264 / MPEG-4 Advan...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N19/00624H04N19/00387H04N19/004H04N19/20H04N19/23H04N19/543H04N7/24
Inventor 李在宪安泰庆俞基源
Owner SAMSUNG ELECTRONICS CO LTD
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